clearerr
fclose
feof
ferror
fflush
fgetc
fgetpos
fgets
fileno
fopen
fprintf
fputc
fputs
fread
freopen
fscanf
fseek
fsetpos
ftell
fwrite
getc
getchar
getdelim
getline
gets
perror
printf
putc
putchar
puts
remove
rename
rewind
scanf
setbuf
setvbuf
snprintf
sprintf
sscanf
tmpfile
tmpnam
ungetc
vfprintf
vfscanf
vprintf
vscanf
vsnprintf
vsprintf
vsscanf